Home / 20,643.26-30,934.51-9,231.35

Finding the Fourth Proportional to 20,643.26, 30,934.51 and 9,231.35

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Solution

The fourth proportional to 20,643.26, 30,934.51 and 9,231.35 is: 13,833.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,643.26 : 30,934.51 = 9,231.35 : x
  2. Step 2: Convert to fraction form
    20,643.26/30,934.51 = 9,231.35/x
  3. Step 3: Cross multiply
    20,643.26x = 30,934.51 × 9,231.35
  4. Step 4: Simplify right side
    20,643.26x = 285,567,111.14
  5. Step 5: Solve for x
    x = 285,567,111.14/20,643.26
  6. Step 6: Final answer
    x = 13,833.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.